div {
    position: relative;
    margin: 0px;
    padding: 0px;
}

#headImg {
    width: 50px;
    height: 50px;
    border-radius: 25px;
}

.slider {
    width: 100%;
    height: 400px;
}

#slider_box {
    box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.3);
}

.money {
    color: #FF5722;
    position: absolute;
    right: 10px;
}

.time {
    position: relative;
    left: 20px;
}

.movie_name {
    position: relative;
    left: 5px;
}

.movie_teacher_headImg {
    width: 30px;
    height: 30px;
    border-radius: 15px;
}

.movie_box {
    height: 240px;
    box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0.3);
}

#logo {
    top: 20px;
    left: 10px;
}

#search {
    width: 240px;
    height: 25px;
    position: relative;
    top: 28px;
    left: 50px;
}

#nav_bar {
    background-color: rgba(0, 0, 0, 0);
    color: #009688;
    top: -400px;
}

.play_img {
    width: 50px;
    height: 50px;
    border-radius: 25px;
    opacity: 0.5;
}

.play_div {
    top: -120px;
    left: 120px;
}

.info {
    top: -50px;
}

/* 菜单 */
* {
    margin: 0;
    padding: 0;
}

#leftMenu a {
    color: white;
    text-decoration-line: none;
}

#leftMenu ul {
    color: white;
    width: 200px;
    position: absolute;
    background: rgba(0, 0, 0, 0.2);
    list-style: none;
    border-radius: 5px;
}

#leftMenu li {
    width: 200px;
    position: relative;
    padding: 10px 0px;
}

#leftMenu li > ul {
    left: 200px;
    top: 0;
    display: none;
}

#leftMenu li:hover > ul {
    display: block;
}

.firstLi {
    width: 200px;
}